Loose-leaf binder.



No. 867,191. PATENTED SEPT. 24, 1907.

J. c. DAWSON.

LOOSE LEAF BINDER. APPLICATION FILED APB.15, 1901.

In! NORRIS PETERS 04. WASHINGTON, D

UNITED STATES PATENT OFFICE.

JAMES C. DAWSON, OF ST. LOUIS, MISSOURI, ASSIGNOR TO SIEBER & TRUSSELLMANUFAC- TURING COMPANY, A CORPORATION OF MISSOURI.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented Sept. 24, 1907.

.Original application filed March 16, 1906, Serial No. 306,323. Dividedand this application filed April 15, 1907. Serial No. 368,253.

To all whom it may concern:

Be it known that I, JAMES C. Dawson, a citizen of the United States, anda resident of the city of St. Louis, State of Missouri, have inventedcertain new and .useful Improvements in Loose-Leaf Binders, of Which thefollowing is a specification, and which are illustrated in theaccompanying drawings, forming a part thereof. 7

This invention relates to that type of loose leaf binders in which thereis used rocking hooks or arches for engaging the leaves to be bound, theinvention being peculiarly well adapted for use. in connection withcheck-books, price books, catalogues, etc.

' The object of this invention is to simplify the construction andaction of devices of this kind; and it consists in the mechanismhereinafter described and which is illustrated in the accompanyingdrawings, in which Figure l is a detail plan view of the binder with itscovers open, and its binding arches beingclosed; Fig..

2 is a detail end elevation of the same With the binding arches closed;Fig. 3 is a similar view with the binding arch open, and drawn to alarger scale; and Fig. 4 is a detail of a pair of binding arches.

The binder is preferably provided with stiff side boards or covers 10,11, united by limp hinges 12, 13, to a back portion 14. The bindingmechanism is carried by a metal plate 15, secured to the inner face. ofthe back in any suitable manner, as by tangs, shown at 16 in dottedlines, struck down from the metal plate, and forced into the back 14.

The binding arches are arranged inpairs, as 17, 18, and 19, 20, themembers of each pair being united by an integral pivot member 21, 22,secured one at each side of the plate 15', and preferably journaled inan overturned portion 23, 24, thereof. The arches of the two pair arearranged alternately, thus bringing one of each pair, as 17 and 19,adjacent-the end of the back. The overturned portions 23, 24, of theback plate 15, which constitute the boxes within which the arch pivotsare journaled, are of less length than the pivots, thus permittinglateral movement of the arches, the range of such movement beingrestricted by the length of the box'and preferably by an overturnedmarginal flange of the plate 15, as shown at 25, 26, serving as stopsfor the arches.

The two end arches, designated in the drawings 17 and 19, respectively,are notched in their outer peripheral faces and adjacent their freeends, as shown at 27, and the edges of the plate 15 are overturnedopposite such arch ends to form lips 28, 29. The arches may be movedlaterally beyond the ends of these lips, and, being closed, may be movedback so that the notch 27 of each will engage one of the lips, therebypreventing the arch from being opened.

The boxes 23, 24, within which the pivots of the arches are journaled,are cut away opposite the free ends of the two inner arches 18, 20, fora space as great as the range of lateral movement of the arches, andeach pivot member 21 is recessed, as shown at 30, to receive the freeend of one of these inner arches. When thus interlocked the two pairs ofarches necessarily move laterally together.

I do not herein claim broadly the laterally sliding arch, with a detentfor holding same in closed position, as claims for 'suchconstruction aremade in my application for Letters Patent filed March 16th, 1906, SerialNo. 306,323, of Which this is a division.

I claim as my invention- 1. In a loose leafbinder, in combination, aback plate; two pairs of archespa pivot member rigidly uniting themembers of each pair of arches, the two pivot members having a rotativeand sliding bearing at opposite sides of the plate, one of each pair ofarches being positioned between the arches of the other pair and beingengageable with the pivot member thereof; and a detent for engaging themore remote arches when closed.

2. In a loose leaf binder, in combination, a back plate; two pairs ofoppositely disposed arches, the members of each pair being united by aslidable pivot; and detents for engaging the free end of one of eachpair of arches and with which it is engaged by the longitudinal movementof the pivot.

3. In a loose leaf binder, in combination, a back plate; two pairs ofoppositely disposed arches, the members of each pair being united by aslidable pivot; and dctents for engaging the free end of one of eachpair of arches and with which it is engaged by the longitudinal movementof the pivot, the two pairs of arches interlocking when closed.

JAMES C. DAWSON.

Witnesses:

LOUIS K. GILLSON, E. M. KLATCHER.

